Head restraint



FIG. 1 is a front perspective view of a head restraint showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is rear view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a right side perspective view thereof with the left side being a minor image thereof;

FIG. 6 is a front perspective view thereof with environment; and,

FIG. 7 is a side perspective view of the head restraint shown in FIG. 1, the opposite side view being a mirror image thereof.

The broken lines shown in FIG. 6 and FIG. 7 represent environment and form no part of the claimed design. 

CLAIM The ornamental design for a head restraint, as shown and described. 